Home Postcode finder QLD Blue Mountain Blue Mountain postcode QLD Blue Mountain is a locality in Queensland covered by postcode 4737. Postcode 4737 State or territory Queensland (QLD) Region Central QLD Add a free Blue Mountain business listing Be the first listing in Blue Mountain Common questionsWhat is the postcode for Blue Mountain?Blue Mountain, QLD has the postcode 4737.What state is Blue Mountain in?Blue Mountain is in Queensland (QLD).Does postcode 4737 cover more than one suburb?Yes. Postcode 4737 covers 8 localities, so the postcode alone does not identify Blue Mountain. Browse other postcodes in Queensland, or widen the search to every Australian postcode.